US20120090093A1 - Steering mechanisms for hospital beds - Google Patents
Steering mechanisms for hospital beds Download PDFInfo
- Publication number
- US20120090093A1 US20120090093A1 US13/309,914 US201113309914A US2012090093A1 US 20120090093 A1 US20120090093 A1 US 20120090093A1 US 201113309914 A US201113309914 A US 201113309914A US 2012090093 A1 US2012090093 A1 US 2012090093A1
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- Prior art keywords
- hospital bed
- mounting member
- rod
- axle
- casters
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
- A61G7/015—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame divided into different adjustable sections, e.g. for Gatch position
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/05—Parts, details or accessories of beds
- A61G7/0507—Side-rails
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/05—Parts, details or accessories of beds
- A61G7/0507—Side-rails
- A61G7/0512—Side-rails characterised by customised length
- A61G7/0513—Side-rails characterised by customised length covering particular sections of the bed, e.g. one or more partial side-rail sections along the bed
- A61G7/0514—Side-rails characterised by customised length covering particular sections of the bed, e.g. one or more partial side-rail sections along the bed mounted to individual mattress supporting frame sections
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/05—Parts, details or accessories of beds
- A61G7/0507—Side-rails
- A61G7/052—Side-rails characterised by safety means, e.g. to avoid injuries to patient or caregiver
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/05—Parts, details or accessories of beds
- A61G7/053—Aids for getting into, or out of, bed, e.g. steps, chairs, cane-like supports
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
- A61G7/16—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto converting a lying surface into a chair
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
- A61G7/1073—Parts, details or accessories
- A61G7/1076—Means for rotating around a vertical axis
Definitions
- the present invention relates to beds for use in hospitals, nursing homes or residential homes.
- Embodiments of the present invention are directed to beds with rotating sleep surfaces that can be configured to sit into a chair and also may stand a patient up like a lift chair on the side of the bed.
- the present invention includes 8′′ casters for specific ease of steering.
- the present invention includes a braking system operated by hydraulics whereby the casters may be locked and released with one cylinder.
- Components of the braking system thereof are strategically located inside the bottom frame rails.
- the present invention includes a steering system that is spring loaded to the floor and lifted with a hydraulic cylinder.
- the present invention includes a twin scissor mechanism actuated by a cylinder with a cylinder extension so that the mechanism may operate at full extension in a confined space.
- the present invention includes a rotating sleep surface mounted to the center frame at the top of the scissors allowing operating rotation of 360 degrees.
- the present invention includes a mounted platform system attaching to the rotating sleep surface that allows the upper frame to tilt around the four-way platform at optimal degrees of tilt.
- the present invention includes arm rails that are mounted to the main frame operated by pin or latch release to allow straight in and out movement.
- the rail is spring loaded and will automatically release when the pin or latch is activated.
- the up/down feature will stop at designated points along the back of the rack and is controlled by a rack and pinion guide system.
- the present invention includes side egress chair capabilities allowing the entire sleep surface to rotate 360 degrees left or right of center and can transition to a seated position at 90 degrees left or right of center. This side egress chair position is locked at 90 degrees, 180 degrees and 270 degrees.
- the present invention includes side egress lift chair allowing the patient to transition from a suspended comfort position to a chair position to a gentle walkout exit position. Walkout exits are obtainable at 90 degrees and 270 degrees.
- the present invention allows 30 degree tilt which is easily achieved by main frame proximity to the floor when the scissors are raised to a predetermined height.
- FIG. 1 is a perspective view of a PCV Braking Mechanism.
- FIG. 2 is an exploded side perspective view of a PCV Steering Mechanism.
- FIG. 3A is a side view of a Twin Scissor Lift Mechanism in an extended lift configuration.
- FIG. 3B is an end perspective view of the Twin Scissor Lift Mechanism shown in FIG. 3A .
- FIG. 3C is a side view of the device shown in FIG. 3A , illustrated in a collapsed configuration.
- FIG. 4 is an exploded view of a Rotating Surface Mechanism.
- FIG. 5A is a top view of a Four Way Equal Platform Tilting Mechanism shown in FIG. 4 .
- FIG. 5B is a rotated view of the Four Way Equal Platform Tilting Mechanism shown in FIG. 5A (rotated 90 degrees).
- FIG. 6 is a top view of the Four Way Equal Platform Tilting Mechanism shown in FIGS. 5A and 5B shown attached to a sleep surface frame.
- FIG. 7A is a side view of an Arm Rail Mechanism.
- FIG. 7B is a side view of the device shown in FIG. 7A , illustrating the arm rail at first retracted position.
- FIG. 7C is a side view of the device shown in FIG. 7A , illustrating the arm rail at a second retracted position below the position shown in FIG. 7B .
- FIG. 8 is an end view (looking from the foot end) of a Comfort Side Chair Egress Mechanism.
- FIG. 9 is an end view (looking from the foot end) of the device shown in FIG. 8 with the bed translated into a Comfort Side Standing Egress configuration.
- FIG. 10 is a side view of a PCV Tilt Mechanism.
- FIG. 11 is a top view of a sleep surface with a Manual Retracting/Extending Foot Section Mechanism.
- FIG. 1 illustrates the PCV Braking mechanism is made of 4 -8 inch locking casters, 2 -hex rods, 1 -drive shaft bar, 1 -hydraulic cylinder, 2 -clevis mounts.
- the casters are mounted to the four corners of the bed into square tubes.
- the tubes are drilled to allow for set screws in each caster and to slide a full length hex rod through the head of the caster to lock the brakes.
- the hex rod is put through the short 1 by 3 inch frame tube on both ends of the bed.
- a clevis is mounted to one end of each of the hex rods.
- the drive shaft bar is mounted to the clevis on each end.
- the drive shaft bar runs through the long 1 by 3 tube. There is a slot cut into the side of the long tube to connect the hydraulic cylinder to the drive shaft bar. When activated the cylinder rocks the clevis, the clevis rotates the hex rod and locks or unlocks the brakes on all 4 of the casters.
- FIG. 2 illustrates the steering mechanism 100 is made of 2 plastic or rubber wheels 110 , springs 115 , hydraulic cylinder 120 , metal rods 113 a, 113 b and square tubes 122 .
- the steering mechanism 100 is mounted to the frame 150 with 3 metal square tubes 122 that are welded to the main base frame 150 . There are holes 123 in the cross section of tube 122 to mount the spring loaded rods 113 a, 113 b to and put the threaded hydraulic cylinder 125 through.
- the spring loaded rods are attached to the bar the casters 160 ( FIGS. 1 , 8 ) are mounted to so the springs keep them on the floor.
- FIGS. 3A-3C illustrate the twin scissor mechanism is made of custom cut steel bars, steel rods, steel tube, copper or nylon bushings, copper or nylon washers, cylinder extension block 75 , nylon blocks and wheels, and can be driven by hydraulics cylinders, air cylinders, air bags, or several electric mechanisms.
- hydraulics cylinders air cylinders, air bags, or several electric mechanisms.
- the scissor mechanism has 8 scissor arms mounted with welds and washers between them to 6 cross structural support rods, 1 cross structural support bar and 1 cross structural support tube.
- the cross structural support tube has 2 clevis arms 79 welded to it and a custom designed cylinder extension 75 mounted to clevis arms 79 with bushing and washers so the extension 75 will pivot.
- the bottom of the cylinder is mounted with a screw to the top of the cross structural support bar and the top of the cylinder is attached with threads to the inside of the cylinder extension block 75 . This allows a larger cylinder to fit in a smaller space and get full range of motion.
- the top of the scissor is mounted to the bottom of the main lift surface ( 50 , FIG.
- FIG. 4 illustrates the rotating surface is made of steel angle iron, custom cut 4 piece metal guide, aluminum round plate, aluminum and steel channel, bearings, nuts, bolts, nylon pads.
- the main lift surface 50 is made of 4 pieces of angle iron cut on a 45 degree angle and welded together to form four 90 degree angles. This makes the main frame 50 where everything else is attached.
- the flat side of the frame is on top and the wall side is faced down to the bottom.
- the top of the surface has a custom cut round aluminum plate 40 mounted to the center.
- the mounts are made of steel and nylon.
- the bottom steel mounting brackets are welded to the frame to lock them in place and keep the round plate from moving.
- the round plate 40 There are 4 custom cut nylon pieces that fit on the top and bottom of the round plate 40 inside of metal mounts for the round plate to ride on. There are 4 top metal pieces of the mount that screw into the frame top to lock the metal and nylon in place. These mounts cause the round plate 40 to make a smooth 360 degree movement.
- the top of the round plate has 2 pieces of channel custom cut and screwed to it to mount 2 bearings 60 and allow the sleep surface to tilt. The bearings are screwed to the top of the channel to mount the main support rod ( 20 , FIG. 6 , FIG. 10 ) for the sleep surface.
- the plate 40 includes circumferentially spaced apart apertures 45 .
- FIGS. 5A , 5 B and 6 illustrate the Four Way Equal Platform Tilting Mechanism.
- the “Rotating Surface Frame” has a triangle shaped main structural tilt bar mount that allows the back of the seat section or “Trend Section” to stay at an optimal degree of tilt while the front of that section fits over the “Rotating Surface Frame”.
- FIG. 6 illustrates the primary support rod 20 attached to bearings 60 above the tilt platform 50 under the back and seat sections 15 , 16 , respectively, of the patient support surface.
- FIGS. 7A-7C illustrate the arm rail mechanism.
- the arm rails are made of steel, nylon, plastic gears, copper or nylon bushings, steel rods, custom cut metal blocks, snap rings, washers, rack and pinion, screws, springs, 1 latch or detent for the up-down feature and 1 latch or detent to release the rail from under the sleep surface.
- the 2 frame rods are mounted through 2 holes in the sleep surface frame.
- the housing made of custom bent steel is mounted with screws or welded on the inside of the rail with 2 holes to house the gears and be the second guide for the 2 frame rods with bushings or washers on both sides.
- the frame rods are keyed to make the gears stay with the frame rods and spring loaded to push them out when they are released with the latch or manually pulled out.
- the custom made steel swing arms that move the rails low to high are welded to the frame rods on the outside of the bed.
- the glide mount rods are welded to the swing arms where there is a bushing inserted over the glide rods.
- the custom made glide blocks are mounted on top of the bushings with a washer on the inside and held on by snap rings on the outside.
- a rack rod is mounted with the teeth facing up to the right guide block and a rack rod is mounted with the teeth facing down to the left guide block.
- the pinion gear is mounted in the center of the slide rods with the racks keyed into it to make sure the glide blocks move evenly in and out which causes the arm rail to travel straight up and down.
- the pinion is held in the center of the glide rods by a nylon mounting bracket that is screwed to the glide rods.
- the latch that holds the rail in any position is mounted through the top of the nylon mounting bracket stops the rails motion by hitting detent slots in the top of the upper rack.
- FIG. 8 illustrates the Comfort Side Chair Egress Mechanism.
- the comfort side chair egress is possible by attaching the Sleep Surface Seat Frame to the main structural tilt bar mount that sits on the rotating round aluminum plate 40 .
- the main structural tilt bar mount 30 allows the Sleep Surface Seat Frame to be stopped in a flat position.
- the sleep surface frame is rotated 90 degrees to either side of the main structural base frame, the scissors are raised high enough, the foot section 17 is 90 degrees vertically to main structural base frame and the seat 16 is flat or parallel to the main structural base frame, the bed can be manually positioned by the care giver into a chair perpendicular to the main structural base frame.
- FIG. 9 illustrates the Comfort Side Standing Egress Mechanism.
- the comfort side standing egress is possible by attaching the Sleep Surface Seat Frame to the main structural tilt bar mount 30 that sits on the rotating round aluminum plate 40 .
- the height of the main structural tilt bar mount allows the Sleep Surface Seat Frame to tilt 30 degrees down at the foot end.
- the sleep surface frame is rotated 90 degrees to either side of the main structural base frame, the scissors are raised high enough, the foot section is kept perpendicular to the main structural base frame and a 30 degree tilt is applied to the seat, the bed will stand the patient up on the side of the bed.
- FIG. 10 illustrates a PCV Tilt Mechanism.
- the triangle shaped main structural tilt bar mount 30 that allows the main support rod 20 for the sleep surface to stay high or lower than the foot section 17 . If the main support rod 20 for the sleep surface remains higher than the front of the seat section 16 it allows for a 30 degree tilt forward. If it remains lower it allows for a 30 degree tilt backwards. The full range of motion is 60 degrees.
- FIG. 11 illustrates a sleep surface support with a Manual Retracting and Extending Foot Section Mechanism.
- the Manual Retracting and Extending Foot Section Mechanism located inside the “Sleep Surface Foot Frame” is made of one piece of channel iron welded to each side of the sleep surface foot frame to create a track to slide the extension in and out.
Abstract
Description
- This application is a second divisional of U.S. patent application Ser. No. 11/398,098, filed Apr. 5, 2006, which issued as U.S. Pat. No. 7,788,748 on Sep. 7, 2010, which claims priority to U.S. Provisional Application Ser. No. 60/668,859, filed Apr. 6, 2005, through first divisional U.S. patent application Ser. No. 12/850,144, filed Aug. 4, 2010, the contents of which are hereby incorporated by reference as if recited in full herein.
- The present invention relates to beds for use in hospitals, nursing homes or residential homes.
- Embodiments of the present invention are directed to beds with rotating sleep surfaces that can be configured to sit into a chair and also may stand a patient up like a lift chair on the side of the bed.
- The present invention includes 8″ casters for specific ease of steering.
- The present invention includes a braking system operated by hydraulics whereby the casters may be locked and released with one cylinder. Components of the braking system thereof are strategically located inside the bottom frame rails.
- The present invention includes a steering system that is spring loaded to the floor and lifted with a hydraulic cylinder.
- The present invention includes a twin scissor mechanism actuated by a cylinder with a cylinder extension so that the mechanism may operate at full extension in a confined space.
- The present invention includes a rotating sleep surface mounted to the center frame at the top of the scissors allowing operating rotation of 360 degrees.
- The present invention includes a mounted platform system attaching to the rotating sleep surface that allows the upper frame to tilt around the four-way platform at optimal degrees of tilt.
- The present invention includes arm rails that are mounted to the main frame operated by pin or latch release to allow straight in and out movement. The rail is spring loaded and will automatically release when the pin or latch is activated. The up/down feature will stop at designated points along the back of the rack and is controlled by a rack and pinion guide system.
- The present invention includes side egress chair capabilities allowing the entire sleep surface to rotate 360 degrees left or right of center and can transition to a seated position at 90 degrees left or right of center. This side egress chair position is locked at 90 degrees, 180 degrees and 270 degrees.
- The present invention includes side egress lift chair allowing the patient to transition from a suspended comfort position to a chair position to a gentle walkout exit position. Walkout exits are obtainable at 90 degrees and 270 degrees.
- The present invention allows 30 degree tilt which is easily achieved by main frame proximity to the floor when the scissors are raised to a predetermined height.
- The present invention will be described hereafter with reference to the attached drawings that are given as non-limiting examples.
-
FIG. 1 is a perspective view of a PCV Braking Mechanism. -
FIG. 2 is an exploded side perspective view of a PCV Steering Mechanism. -
FIG. 3A is a side view of a Twin Scissor Lift Mechanism in an extended lift configuration. -
FIG. 3B is an end perspective view of the Twin Scissor Lift Mechanism shown inFIG. 3A . -
FIG. 3C is a side view of the device shown inFIG. 3A , illustrated in a collapsed configuration. -
FIG. 4 is an exploded view of a Rotating Surface Mechanism. -
FIG. 5A is a top view of a Four Way Equal Platform Tilting Mechanism shown inFIG. 4 . -
FIG. 5B is a rotated view of the Four Way Equal Platform Tilting Mechanism shown inFIG. 5A (rotated 90 degrees). -
FIG. 6 is a top view of the Four Way Equal Platform Tilting Mechanism shown inFIGS. 5A and 5B shown attached to a sleep surface frame. -
FIG. 7A is a side view of an Arm Rail Mechanism. -
FIG. 7B is a side view of the device shown inFIG. 7A , illustrating the arm rail at first retracted position. -
FIG. 7C is a side view of the device shown inFIG. 7A , illustrating the arm rail at a second retracted position below the position shown inFIG. 7B . -
FIG. 8 is an end view (looking from the foot end) of a Comfort Side Chair Egress Mechanism. -
FIG. 9 is an end view (looking from the foot end) of the device shown inFIG. 8 with the bed translated into a Comfort Side Standing Egress configuration. -
FIG. 10 is a side view of a PCV Tilt Mechanism. -
FIG. 11 is a top view of a sleep surface with a Manual Retracting/Extending Foot Section Mechanism. - PCV Braking Mechanism
-
FIG. 1 illustrates the PCV Braking mechanism is made of 4 -8 inch locking casters, 2 -hex rods, 1 -drive shaft bar, 1 -hydraulic cylinder, 2 -clevis mounts. - The casters are mounted to the four corners of the bed into square tubes. The tubes are drilled to allow for set screws in each caster and to slide a full length hex rod through the head of the caster to lock the brakes. The hex rod is put through the short 1 by 3 inch frame tube on both ends of the bed. A clevis is mounted to one end of each of the hex rods. The drive shaft bar is mounted to the clevis on each end. The drive shaft bar runs through the long 1 by 3 tube. There is a slot cut into the side of the long tube to connect the hydraulic cylinder to the drive shaft bar. When activated the cylinder rocks the clevis, the clevis rotates the hex rod and locks or unlocks the brakes on all 4 of the casters.
- PCV Steering Mechanism
-
FIG. 2 illustrates thesteering mechanism 100 is made of 2 plastic orrubber wheels 110, springs 115,hydraulic cylinder 120,metal rods square tubes 122. - The
steering mechanism 100 is mounted to theframe 150 with 3 metalsquare tubes 122 that are welded to themain base frame 150. There areholes 123 in the cross section oftube 122 to mount the spring loadedrods hydraulic cylinder 125 through. The spring loaded rods are attached to the bar the casters 160 (FIGS. 1 , 8) are mounted to so the springs keep them on the floor. There is abar 125 that connects above thesquare tube 122 to the spring loaded bars to make sure they stay straight up and down. It is the same bar that thehydraulic head 120 h pushes on to lift the casters 160 (FIGS. 1 , 8 and 10) off of the ground. This keeps thecasters 160 on the floor until the bed needs to be moved side to side when the cylinder will raise them. This mechanism allowed us to push thebed 60 feet in a straight line by itself. - Drawing Legend
- 125 Metal Bar
- 122 Square Tube
- 123 Apertures
- 128 Bushing
- 115 Spring
- 113 a, 113 b Metal Rod
- 120 Hydraulic Cylinder
- 112 Axle
- 110 Wheels
- Twin Scissor Lift Mechanism
-
FIGS. 3A-3C illustrate the twin scissor mechanism is made of custom cut steel bars, steel rods, steel tube, copper or nylon bushings, copper or nylon washers,cylinder extension block 75, nylon blocks and wheels, and can be driven by hydraulics cylinders, air cylinders, air bags, or several electric mechanisms. We chose the hydraulic cylinder because of load we want to lift. We plan to build less expensive models with the other mechanisms in the future. - The scissor mechanism has 8 scissor arms mounted with welds and washers between them to 6 cross structural support rods, 1 cross structural support bar and 1 cross structural support tube. The cross structural support tube has 2
clevis arms 79 welded to it and a custom designedcylinder extension 75 mounted to clevisarms 79 with bushing and washers so theextension 75 will pivot. The bottom of the cylinder is mounted with a screw to the top of the cross structural support bar and the top of the cylinder is attached with threads to the inside of thecylinder extension block 75. This allows a larger cylinder to fit in a smaller space and get full range of motion. The top of the scissor is mounted to the bottom of the main lift surface (50,FIG. 4 ) and to the top of the metal scissor housing that has a metal mounting bracket that is welded to both the main lift surface and the top of the scissor housing. Inside the metal mounting brackets are nylon blocks with holes in them to lock the cross structural support rods in place and allow them to move very quietly straight up and down on one end of the scissor. The other ends are attached with channel iron. The channel iron is welded to the top of the scissor housing on both sides and the bottom of the main lift surface. The channels act as tracks for the nylon wheels to run in. The wheels move from one end (our foot end) to the other end (our head end) causing the scissors to lift. The purpose of using the scissor is to get very low and very high while having an almost square top to work around to achieve degree of tilt on all 4 sides. - Rotating Surface Mechanism
-
FIG. 4 illustrates the rotating surface is made of steel angle iron, custom cut 4 piece metal guide, aluminum round plate, aluminum and steel channel, bearings, nuts, bolts, nylon pads. - The
main lift surface 50 is made of 4 pieces of angle iron cut on a 45 degree angle and welded together to form four 90 degree angles. This makes themain frame 50 where everything else is attached. The flat side of the frame is on top and the wall side is faced down to the bottom. There are 2 channel tracks mounted with a weld to the bottom of the frame for the 2 scissor lift wheels to run in and 2 brackets welded to the bottom on the opposite side to make the scissor track straight up and down. The top of the surface has a custom cut roundaluminum plate 40 mounted to the center. The mounts are made of steel and nylon. The bottom steel mounting brackets are welded to the frame to lock them in place and keep the round plate from moving. There are 4 custom cut nylon pieces that fit on the top and bottom of theround plate 40 inside of metal mounts for the round plate to ride on. There are 4 top metal pieces of the mount that screw into the frame top to lock the metal and nylon in place. These mounts cause theround plate 40 to make a smooth 360 degree movement. The top of the round plate has 2 pieces of channel custom cut and screwed to it to mount 2bearings 60 and allow the sleep surface to tilt. The bearings are screwed to the top of the channel to mount the main support rod (20,FIG. 6 ,FIG. 10 ) for the sleep surface. As shown, theplate 40 includes circumferentially spaced apart apertures 45. - Four Way Equal Platform Tilting Mechanism
-
FIGS. 5A , 5B and 6 illustrate the Four Way Equal Platform Tilting Mechanism. The way the “Rotating Surface Frame” connects to the “Sleep Surface Frame” and the width of each allows the “Sleep Surface Frame” to fit over or around the “Rotating Surface Frame” on all sides. The “Rotating Surface Frame” has a triangle shaped main structural tilt bar mount that allows the back of the seat section or “Trend Section” to stay at an optimal degree of tilt while the front of that section fits over the “Rotating Surface Frame”.FIG. 6 illustrates theprimary support rod 20 attached tobearings 60 above thetilt platform 50 under the back andseat sections - Arm Rail Mechanism
-
FIGS. 7A-7C illustrate the arm rail mechanism. The arm rails are made of steel, nylon, plastic gears, copper or nylon bushings, steel rods, custom cut metal blocks, snap rings, washers, rack and pinion, screws, springs, 1 latch or detent for the up-down feature and 1 latch or detent to release the rail from under the sleep surface. - The 2 frame rods are mounted through 2 holes in the sleep surface frame. The housing made of custom bent steel is mounted with screws or welded on the inside of the rail with 2 holes to house the gears and be the second guide for the 2 frame rods with bushings or washers on both sides. The frame rods are keyed to make the gears stay with the frame rods and spring loaded to push them out when they are released with the latch or manually pulled out. The custom made steel swing arms that move the rails low to high are welded to the frame rods on the outside of the bed. The glide mount rods are welded to the swing arms where there is a bushing inserted over the glide rods. The custom made glide blocks are mounted on top of the bushings with a washer on the inside and held on by snap rings on the outside. There are 2 holes in the glide blocks to mount the 2 glide slide rods though. A rack rod is mounted with the teeth facing up to the right guide block and a rack rod is mounted with the teeth facing down to the left guide block. The pinion gear is mounted in the center of the slide rods with the racks keyed into it to make sure the glide blocks move evenly in and out which causes the arm rail to travel straight up and down. The pinion is held in the center of the glide rods by a nylon mounting bracket that is screwed to the glide rods. The latch that holds the rail in any position is mounted through the top of the nylon mounting bracket stops the rails motion by hitting detent slots in the top of the upper rack.
- Drawing Legend:
- 1. Rack
- 2. Pinion
- 4. Glide Slide Rods
- 7. Steel Swing Arms
- 9. Detent Bar
- 10. Release Latch
- Comfort Side Chair Egress Mechanism
-
FIG. 8 illustrates the Comfort Side Chair Egress Mechanism. The comfort side chair egress is possible by attaching the Sleep Surface Seat Frame to the main structural tilt bar mount that sits on the rotatinground aluminum plate 40. The main structuraltilt bar mount 30 allows the Sleep Surface Seat Frame to be stopped in a flat position. When the sleep surface frame is rotated 90 degrees to either side of the main structural base frame, the scissors are raised high enough, thefoot section 17 is 90 degrees vertically to main structural base frame and theseat 16 is flat or parallel to the main structural base frame, the bed can be manually positioned by the care giver into a chair perpendicular to the main structural base frame. - Comfort Side Standing Egress Mechanism
-
FIG. 9 illustrates the Comfort Side Standing Egress Mechanism. The comfort side standing egress is possible by attaching the Sleep Surface Seat Frame to the main structuraltilt bar mount 30 that sits on the rotatinground aluminum plate 40. The height of the main structural tilt bar mount allows the Sleep Surface Seat Frame to tilt 30 degrees down at the foot end. When the sleep surface frame is rotated 90 degrees to either side of the main structural base frame, the scissors are raised high enough, the foot section is kept perpendicular to the main structural base frame and a 30 degree tilt is applied to the seat, the bed will stand the patient up on the side of the bed. - PCV Tilt Mechanism
-
FIG. 10 illustrates a PCV Tilt Mechanism. The triangle shaped main structuraltilt bar mount 30 that allows themain support rod 20 for the sleep surface to stay high or lower than thefoot section 17. If themain support rod 20 for the sleep surface remains higher than the front of theseat section 16 it allows for a 30 degree tilt forward. If it remains lower it allows for a 30 degree tilt backwards. The full range of motion is 60 degrees. - Manual Retracting and Extending Foot Section Mechanism
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FIG. 11 illustrates a sleep surface support with a Manual Retracting and Extending Foot Section Mechanism. The Manual Retracting and Extending Foot Section Mechanism located inside the “Sleep Surface Foot Frame” is made of one piece of channel iron welded to each side of the sleep surface foot frame to create a track to slide the extension in and out. There are manual stops going in and set pins on the outside to release it out. It is spring loaded to push out when the pin is released and will retract with pressure until it locks itself going in.
Claims (17)
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Patent Citations (2)
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US2876654A (en) * | 1956-11-13 | 1959-03-10 | Benjamin H Sweitzer | Shock absorber steering wheel construction |
US5083625A (en) * | 1990-07-02 | 1992-01-28 | Bleicher Joel N | Powdered maneuverable hospital cart |
Also Published As
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US8438680B2 (en) | 2013-05-14 |
US20100293718A1 (en) | 2010-11-25 |
US7979931B2 (en) | 2011-07-19 |
US8327479B2 (en) | 2012-12-11 |
US8091162B2 (en) | 2012-01-10 |
US8127380B2 (en) | 2012-03-06 |
US7904978B2 (en) | 2011-03-15 |
US20100313355A1 (en) | 2010-12-16 |
US20110138537A1 (en) | 2011-06-16 |
US20100287705A1 (en) | 2010-11-18 |
US20070017029A1 (en) | 2007-01-25 |
US7788748B2 (en) | 2010-09-07 |
US20130061397A1 (en) | 2013-03-14 |
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